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You will know when you install it and your aftermarket unit will not work. Thats how I noticed. Was told the older units were out. When contacting peripheral tech support they sent a email attachment with the wire schematic for the jumper install. Not a big deal unless you choose to go back to a factory radio and have forgotten.
Call Peripheral and talk to Mr Tassillo in tech support he knows what he is doing and will give you the details on the color code for wires. The 800 # is on the box...